/**
 * editor_plugin_src.js
 *
 * Copyright 2009, Moxiecode Systems AB
 * Released under LGPL License.
 *
 * License: http://tinymce.moxiecode.com/license
 * Contributing: http://tinymce.moxiecode.com/contributing
 */

(function() {
    tinymce.create('tinymce.plugins.VisualChars', {
        init : function(ed, url) {
            var t = this;

            t.editor = ed;

            // Register commands
            ed.addCommand('mceVisualChars', t._toggleVisualChars, t);

            // Register buttons
            ed.addButton('visualchars', {title : 'visualchars.desc', cmd : 'mceVisualChars'});

            ed.onBeforeGetContent.add(function(ed, o) {
                if (t.state && o.format != 'raw' && !o.draft) {
                    t.state = true;
                    t._toggleVisualChars(false);
                }
            });
        },

        getInfo : function() {
            return {
                longname : 'Visual characters',
                author : 'Moxiecode Systems AB',
                authorurl : 'http://tinymce.moxiecode.com',
                infourl : 'http://wiki.moxiecode.com/index.php/TinyMCE:Plugins/visualchars',
                version : tinymce.majorVersion + "." + tinymce.minorVersion
            };
        },

        // Private methods

        _toggleVisualChars : function(bookmark) {
            var t = this, ed = t.editor, nl, i, h, d = ed.getDoc(), b = ed.getBody(), nv, s = ed.selection, bo, div, bm;

            t.state = !t.state;
            ed.controlManager.setActive('visualchars', t.state);

            if (bookmark)
                bm = s.getBookmark();

            if (t.state) {
                nl = [];
                tinymce.walk(b, function(n) {
                    if (n.nodeType == 3 && n.nodeValue && n.nodeValue.indexOf('\u00a0') != -1)
                        nl.push(n);
                }, 'childNodes');

                for (i = 0; i < nl.length; i++) {
                    nv = nl[i].nodeValue;
                    nv = nv.replace(/(\u00a0)/g, '<span data-mce-bogus="1" class="mceItemHidden mceItemNbsp">$1</span>');

                    div = ed.dom.create('div', null, nv);
                    while (node = div.lastChild)
                        ed.dom.insertAfter(node, nl[i]);

                    ed.dom.remove(nl[i]);
                }
            } else {
                nl = ed.dom.select('span.mceItemNbsp', b);

                for (i = nl.length - 1; i >= 0; i--)
                    ed.dom.remove(nl[i], 1);
            }

            s.moveToBookmark(bm);
        }
    });

    // Register plugin
    tinymce.PluginManager.add('visualchars', tinymce.plugins.VisualChars);
})();